linux-kernel - [PATCH v2 3/4] Device bindings documentation updated ACPI-enabled platforms not currently supported

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Date:   Fri, 14 Oct 2016 17:52:50 +0100
From:   Luis.Oliveira@...opsys.com
To:     jarkko.nikula@...ux.intel.com, andriy.shevchenko@...ux.intel.com,
        mika.westerberg@...ux.intel.com, wsa@...-dreams.de,
        linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org,
        robh+dt@...nel.org, mark.rutland@....com,
        devicetree@...r.kernel.org
Cc:     Luis.Oliveira@...opsys.com, CARLOS.PALMINHA@...opsys.com,
        Ramiro.Oliveira@...opsys.com
Subject: [PATCH v2 3/4] Device bindings documentation updated ACPI-enabled platforms not currently supported

From: Luis Oliveira <lolivei@...opsys.com>

Signed-off-by: Luis Oliveira <lolivei@...opsys.com>
---
 Documentation/devicetree/bindings/i2c/i2c-designware.txt | 5 ++++-
 drivers/i2c/busses/i2c-designware-platdrv.c              | 4 +++-
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/i2c/i2c-designware.txt b/Documentation/devicetree/bindings/i2c/i2c-designware.txt
index fee26dc..d3d163c 100644
--- a/Documentation/devicetree/bindings/i2c/i2c-designware.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-designware.txt
@@ -19,6 +19,8 @@ Optional properties :
 
  - i2c-sda-falling-time-ns : should contain the SDA falling time in nanoseconds.
    This value which is by default 300ns is used to compute the tHIGH period.
+   
+ - is-slave : indicates if the block is a I2C slave device.
 
 Example :
 
@@ -30,7 +32,7 @@ Example :
 		interrupts = <11>;
 		clock-frequency = <400000>;
 	};
-
+	
 	i2c@...0000 {
 		#address-cells = <1>;
 		#size-cells = <0>;
@@ -42,4 +44,5 @@ Example :
 		i2c-sda-hold-time-ns = <300>;
 		i2c-sda-falling-time-ns = <300>;
 		i2c-scl-falling-time-ns = <300>;
+		is-slave;
 	};
diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c
index b9076da..f29e657 100644
--- a/drivers/i2c/busses/i2c-designware-platdrv.c
+++ b/drivers/i2c/busses/i2c-designware-platdrv.c
@@ -238,7 +238,9 @@ static int dw_i2c_plat_probe(struct platform_device *pdev)
 					 &dev->scl_falling_time);
 		device_property_read_u32(&pdev->dev, "clock-frequency",
 					 &dev->clk_freq);
-		is_slave = device_property_read_bool(&pdev->dev, "isslave");
+#ifndef CONFIG_ACPI
+		is_slave = device_property_read_bool(&pdev->dev, "is-slave");
+#endif
 	}
 
 	acpi_speed = i2c_acpi_find_bus_speed(&pdev->dev);
-- 
2.10.1